The unit is made by Gibson (Frigidaire) according to the listing on this board. It was manufactured in Sept 08 but I have not had any luck finding a service manual. I have the owner manual but it does not have anything that useful.

I have removed the panel but have no idea how to determine which component has failed. The front panel also has buttons for "Filter Reset" and "Lock". There is a PCB (241832802) attached to the panel.

Since everything on the panel quit working I am thinking it is either power to the control board or the board itself. How could I figure this out?

there should be a tech sheet somewhere located on the machine. This tech sheet is tucked into, or behind a panel or crevice. I think if you were to pull the front kick plate down, it may be under there somewhere. That will have a schematic that will tell you what wires to check for incoming voltage to the display. You can probably check under the hinge cover on the freezer door, that's where power comes into the door.

I can't view the schematic. But from what the parts breakdown looks like, I would think that your display board is bad. I can't find anything else that would "Control" power to the door. Just be sure there is voltage going to the door.